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Saverio Yaquinto as Capitán Richard, el hombre bestia |
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Carmen Quiroga as Esther |
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Raúl D'Angeli as Dr. Marchesi |
 |
Lito Bayardo as Alberto |
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Elvira Ratti as Enriqueta |
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Felipe Salzinger as Profesor Robinson |
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Rosarito Olmedo as Susana |
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Beatriz Colman as Margarita |
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Gastón Robert as Don Nicolás Santillán |
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Ricardo Battaglia as Profesor Berard |
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Mario Cuartucci as Detective Jackson |
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B. Filippelli as Pescador |
| Camera | Camilo Zaccaría Soprani | Director of Photography |
| Writing | Camilo Zaccaría Soprani | Story |
| Directing | Camilo Zaccaría Soprani | Director |
